EP 4130444 A4 20230719 - SINTERED ALLOY VALVE GUIDE, AND METHOD FOR MANUFACTURING SINTERED ALLOY VALVE GUIDE
Title (en)
SINTERED ALLOY VALVE GUIDE, AND METHOD FOR MANUFACTURING SINTERED ALLOY VALVE GUIDE
Title (de)
VENTILFÜHRUNG AUS GESINTERTER LEGIERUNG UND VERFAHREN ZUR HERSTELLUNG EINER VENTILFÜHRUNG AUS GESINTERTER LEGIERUNG
Title (fr)
GUIDE DE SOUPAPE EN ALLIAGE FRITTÉ, ET PROCÉDÉ DE FABRICATION D'UN GUIDE DE SOUPAPE EN ALLIAGE FRITTÉ
Publication
Application
Priority
JP 2021016775 W 20210427
Abstract (en)
[origin: EP4130444A1] The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
IPC 8 full level
F01L 3/08 (2006.01); B22F 3/11 (2006.01); B22F 3/26 (2006.01); B22F 5/00 (2006.01); C22C 1/08 (2006.01); F01L 3/02 (2006.01); F01L 3/04 (2006.01); F01M 9/10 (2006.01)
CPC (source: CN EP US)
B22F 3/1007 (2013.01 - CN); B22F 3/11 (2013.01 - EP); B22F 3/16 (2013.01 - US); B22F 3/24 (2013.01 - CN); B22F 3/26 (2013.01 - CN EP US); B22F 5/00 (2013.01 - EP); B22F 5/106 (2013.01 - CN US); B22F 7/002 (2013.01 - US); C22C 1/08 (2013.01 - EP); F01L 3/02 (2013.01 - EP); F01L 3/04 (2013.01 - EP); F01L 3/08 (2013.01 - CN EP US); F01M 9/103 (2013.01 - EP); F16C 29/02 (2013.01 - CN); F16C 33/104 (2013.01 - CN); B22F 2003/1106 (2013.01 - EP); B22F 2003/247 (2013.01 - CN US); B22F 2201/02 (2013.01 - US); B22F 2201/20 (2013.01 - US); B22F 2301/10 (2013.01 - US); B22F 2301/35 (2013.01 - US); B22F 2302/40 (2013.01 - US); B22F 2998/10 (2013.01 - EP US); F01L 2301/00 (2020.05 - EP US); F01L 2820/01 (2013.01 - EP); F16C 2361/91 (2013.01 - CN); Y02T 10/12 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
- [XI] WO 2005031127 A1 20050407 - BLEISTAHL PROD GMBH & CO KG [DE], et al
- [XI] WO 2016202525 A1 20161222 - BLEISTAHL-PRODUKTIONS GMBH & CO KG [DE]
- [XI] CN 106121761 A 20161116 - SUZHOU GENFU MACHINERY SCIENCE & TECH CO LTD
- [A] DE 19729417 B4 20061109 - HITACHI POWDERED METALS [JP]
- See also references of WO 2022230046A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4130444 A1 20230208; EP 4130444 A4 20230719; CN 115127008 A 20220930; CN 117515038 A 20240206; CN 220523851 U 20240223; JP 2022169498 A 20221109; JP 7122480 B1 20220819; JP WO2022230046 A1 20221103; US 11719138 B2 20230808; US 2023127085 A1 20230427; WO 2022230046 A1 20221103
DOCDB simple family (application)
EP 21937219 A 20210427; CN 202210456074 A 20220427; CN 202221005940 U 20220427; CN 202311487478 A 20220427; JP 2021016775 W 20210427; JP 2021555239 A 20210427; JP 2022093124 A 20220608; US 202117922613 A 20210427